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The first nationwide telephone numbering plan of 1947 divided Ohio into four numbering plan areas (NPAs), one each for a quadrant of the state: 216, 419, 513, and 614. In 1996, 330 and 937 were added by splitting existing NPAs.
The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits.
The regions shown in blue are in Ohio. Area codes 614 and 380 are telephone area codes in the North American Numbering Plan (NANP) for all or part of four counties in central Ohio, surrounding and including the state capital of Columbus.
A telephone prefix is the first set of digits after the country, and area codes of a telephone number. In the North American Numbering Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme.
Central office prefixes in area code 458 [6] Prefix Location County Introduced 200 Cascade Locks: Hood River: October 3, 2011 201 Eugene: Lane: March 28, 2012 202 Bend: Deschutes: September 11, 2012 203 Rogue River: Jackson: October 6, 2014 204 Toledo: Lincoln: March 17, 2016 205 Eugene: Lane: June 16, 2011 206 Bend: Deschutes: August 18, 2011 ...
Worldwide distribution of country calling codes. Regions are coloured by first digit. Telephone country codes, but also sometimes referred to as "country dial-in codes", or historically "international subscriber dialing" (ISD) codes in the U.K., are telephone number dialing prefixes for reaching subscribers in foreign countries or areas via international telecommunication networks.
Area code 740 was established by an area code split of area code 614 on November 8, 1997. [1] By the end of 2013, exhaust studies indicated that the 740 area code would run out of telephone numbers sometime in 2015.
Original NANP area codes of Florida and surrounding states. In 1947, the American Telephone and Telegraph Company (AT&T) announced the first nationwide telephone numbering plan and divided the United States and Canada into 86 numbering plan areas and assigned the original North American area codes, a unique code for each area, to speed the connection times for operator toll dialing.